alleryଏକ ଡଙ୍ଗାର ସ୍ଥିର ଜଳରେ ବେଗ 12 km/h; ସ୍ରୋତର ବେଗ 3 km/h। ସ୍ରୋତ ଅନୁକୂଳରେ 27 km ଯାଇ ଫେରିବାକୁ କେତେ ସମୟ ଲାଗେ?
A4 h
B4.5 h
C4.8 h
D5 h
Answer & Solution
Correct answer: C. 4.8 h
ଡାଉନ୍ଷ୍ଟ୍ରିମ୍ ଏବଂ ଅପଷ୍ଟ୍ରିମ୍ ସମୟ ହେଉଛି 27/15 ଏବଂ 27/9 ଘଣ୍ଟା, ସମୁଦାୟ 4.8 ଘଣ୍ଟା |
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